Here is an alphabetical listing of business and club affiliations of the Slinkey and Dern families from the 1870s to 1920s. Some are listed in greater details with their own pages while others are no more than a name listed in a directory or newspaper.
Picnic grounds in Martinez, California owned and run by the Slinkeys from 1879 to at least 1880. This operation was likely a good training experience for their ownership of the El Monte Hotel.
April 5, 1879: San Francisco News Letter and California Advertiser, page 7 under "Amusements" lists "'Cremorne Gardens,' Martinez, Contra Costa County. This property has lately been purchased by the undersigned, who is fitting it up for Picnics, Festivals, Excursions and Rural Entertainments for the Coming Season. An immense Pavilion is in course of construction. the Grounds are very extensive, with shady trees & creek of running water, and are accessible by both steamboat and railroad. Can be secured on liberal terms by applying on the premises, or to J.E. Slinkey, Overland House."
April 12, 1879: San Francisco News Letter and California Advertiser, page 6: "Cremorne Gardens, Martinez---On Sunday, April 13th, the boat will leave Washington Street Wharf at 9am for Martinez with excursionists for the Inauguration Picnic of the Cremorne Gardens, one of the most beautiful places of resort on the whole Pacific Coast. The opening address will be delivered by Eugene N. Deuprey, and the Germania Rifles and German Dragoons will form the escort."
June 21, 1879: San Francisco News Letter and California Advertiser, page 2 "Excursion to Cremorne Gardens, Martinez, Sunday. Steamer S.M. Whipple leaves Wash. St. wharf at 9am."
June 2, 1880: Entire Slinkey family enumerated at Cremorne Gardens for the 1880 U.S. Federal Census.
Large hotel in Sausalito, California run by the Slinkeys from about 1882 to 1897. See the El Monte Hotel page for more.
Hotel run by Slinkeys in San Francisco from 1873 - 1879. read more on the Overland House page.